I can confirm everything that Snowguy said about the Minnesota-Wisconsin rivalry, but in my opinion, the rivalry is more prevalent with Wisconsin-Illinois.
Anyways, I've known that apparently Florida has beef against Georgia. TBH I don't know why....
...oh wait
*steps back a lot to see the Florida vs Georgia crapstorm to ensue*
EDIT: Okay, actually, it's not really a matter of "redneck" vs "civilized". I have no bad blood against the DeleGAtion. My family is from Wisconsin, so I'm more attached to the Wisconsin vs Illinois/Minnesota rivalry than the Florida vs Georgia one.